Absent an urgent security need, no.
15.4.1 was released to address an urgent security issue. 15.5 is no more than 3 or 4 weeks away. Absent another zero day exploit or similar security issue, I don’t see a 15.4.2
That makes sense, but leaving a paid music streaming service with bugs that directly affects music playback for another month seems unacceptable to me, unless these issues can be solved without the need of updating the software.
Currently (there are several threads on reddit about this), there are the following issues with AM.
"Gapless playback is semi broken, and track 2 of almost all albums is skipped over when playing them from the beginning.
Also, sometimes playback will just suddenly stop, just stop. If you press play again, it will continue without any issues.
I encounter this behavior on Mac, IOS, Apple TV, and Homepod. I dont know if its a server side issues or an OS bug, in which case a new software update would be required."
"it isn’t exactly the second song on every album, but the second song played after you’ve selected a song.
For example, if you start an album on Track 2 the track will play all the way through and then skip Track 3 to go to Track 4 and then continue like normal after that".